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公开(公告)号：US11871994B2
公开(公告)日：2024-01-16
申请号：US17494273
申请日：2021-10-05
Applicant: Topcon Corporation
Inventor： Yasufumi Fukuma , Kazuhiro Oomori
Abstract: The object of the present invention is to develop an ophthalmologic microscope of a new method that increases the degree of freedom in the optical design in the Galilean ophthalmologic microscope provided with an OCT optical system. The present invention provides an ophthalmologic microscope, wherein an observation optical system, an objective lens, and an OCT optical system are placed in such a way that the optical axis of the OCT optical system does not penetrate through objective lens, and the optical axis of the observation optical system and the optical axis of the OCT optical system are non-coaxial, and wherein the ophthalmologic microscope further comprises a SLO optical system that scans a light ray which is a visible ray, a near infrared ray, or an infrared ray and guides the light to the subject's eye so as to become substantially coaxial with the optical axis of the OCT optical system.
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公开(公告)号：US20210082116A1
公开(公告)日：2021-03-18
申请号：US17103058
申请日：2020-11-24
Applicant: Topcon Corporation
Inventor： Zaixing Mao , Zhenguo Wang , Kinpui Chan , Yasufumi Fukuma
Abstract: A machine learning model is trained to identify the texture difference between the different layers of a multilayer object. By training with data in full 3D space, the resulting model is capable of predicting the probability that each pixel in a 3D image belongs to a certain layer. With the resulting probability map, comparing probabilities allows one to determine boundaries between layers, and/or other properties and useful information such as volume data.
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公开(公告)号：US20200163545A1
公开(公告)日：2020-05-28
申请号：US16200676
申请日：2018-11-27
Applicant: Topcon Corporation
Inventor： Yasufumi Fukuma , Hideharu Suzuki , Zhenguo Wang , Kazuhiro Oomori , Makoto Fujino
Abstract: An ophthalmologic apparatus of some exemplary embodiments includes an illumination system, interference photographing system, anterior eye segment photographing system, first optical path coupling element, and controller. The illumination system projects illumination light output from a light source, onto the anterior eye segment of a subject's eye. The interference photographing system performs photographing of an interference pattern formed on the cornea by the illumination light. The anterior eye segment photographing system performs photographing of the anterior eye segment onto which the illumination light is being projected. The first optical path coupling element couples the optical path of the interference photographing system and the optical path of the anterior eye segment photographing system with one another. The controller controls a display device to display an interference image acquired by the interference photographing system, over an anterior eye segment image acquired by the anterior eye segment photographing system.
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Patent Agency Ranking
公开(公告)号：US12226161B2
公开(公告)日：2025-02-18
申请号：US17375026
申请日：2021-07-14
Applicant: Topcon Corporation
Inventor： Masashi Nakajima , Jonathan Liu , Yasufumi Fukuma
Abstract: An ophthalmic apparatus includes an acquiring unit, an OCT unit, an analyzer, and a calculator. The acquiring unit is configured to acquire a dioptric power in a first region including a fovea of a subject's eye. The OCT unit is configured to acquire OCT data of a fundus of the subject's eye using optical coherence tomography. The analyzer is configured to specify a shape of the fundus by analyzing the OCT data. The calculator is configured to calculate a dioptric power in a peripheral region of the first region of the fundus based on the dioptric power in the first region and the shape of the fundus.
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公开(公告)号：US11849996B2
公开(公告)日：2023-12-26
申请号：US16917925
申请日：2020-07-01
Applicant: TOPCON CORPORATION
Inventor： Yasufumi Fukuma , Hisashi Tsukada , Atsushi Kubota
IPC: G06K9/00 , A61B3/10 , A61B5/00 , G01B9/02091 , G01B9/02 , G06T7/32 , A61B3/00 , A61B3/12 , G06T3/00 , G06T3/20 , G06T3/60
CPC classification number: A61B3/102 , A61B3/0025 , A61B3/12 , A61B5/0066 , G01B9/02083 , G01B9/02091 , G06T3/0068 , G06T3/20 , G06T3/60 , G06T7/32 , G06T2200/04 , G06T2207/10101 , G06T2207/20212 , G06T2207/30041
Abstract: An OCT apparatus of an exemplary aspect includes an OCT scanner, image data generating unit, registration unit, and image data composing unit. The OCT scanner is configured to acquire three dimensional data sets by applying an OCT scan to mutually different three dimensional regions of a sample. The image data generating unit is configured to generate a plurality of pieces of image data from the three dimensional data sets. The registration unit is configured to perform a first registration between the plurality of pieces of image data by applying an image correlation calculation to each of overlap regions in the plurality of pieces of image data. The image data composing unit is configured to compose the plurality of pieces of image data based on a result of the first registration.
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公开(公告)号：US11547294B2
公开(公告)日：2023-01-10
申请号：US16568262
申请日：2019-09-12
Applicant: TOPCON CORPORATION
Inventor： Yasufumi Fukuma , Takefumi Hayashi , Yoko Tatara
Abstract: An ophthalmic apparatus of an exemplary aspect performs the first and second OCT scans on a subject's eye. The first OCT scan is performed on the first region including the first site of the subject's eye, and the second OCT scan is performed on the second region including the second site. The ophthalmic apparatus acquires the first deviation information of the subject's eye prior to the first OCT scan and performs alignment, and also acquires the second deviation information of the subject's eye prior to the second OCT scan and performs alignment. The ophthalmic apparatus calculates the distance between the first site and the second site based on the first data acquired through the first OCT scan and second data acquired through the second OCT scan.
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公开(公告)号：US11302006B2
公开(公告)日：2022-04-12
申请号：US17103058
申请日：2020-11-24
Applicant: Topcon Corporation
Inventor： Zaixing Mao , Zhenguo Wang , Kinpui Chan , Yasufumi Fukuma
Abstract: A machine learning model is trained to identify the texture difference between the different layers of a multilayer object. By training with data in full 3D space, the resulting model is capable of predicting the probability that each pixel in a 3D image belongs to a certain layer. With the resulting probability map, comparing probabilities allows one to determine boundaries between layers, and/or other properties and useful information such as volume data.
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公开(公告)号：US11166631B2
公开(公告)日：2021-11-09
申请号：US16616564
申请日：2018-05-25
Applicant: Topcon Corporation
Inventor： Yasufumi Fukuma , Kazuhiro Oomori
Abstract: The object of the present invention is to develop an ophthalmologic microscope of a new method that increases the degree of freedom in the optical design in the Galilean ophthalmologic microscope provided with an OCT optical system. The present invention provides an ophthalmologic microscope, wherein an observation optical system, an objective lens, and an OCT optical system are placed in such a way that the optical axis of the OCT optical system does not penetrate through objective lens, and the optical axis of the observation optical system and the optical axis of the OCT optical system are non-coaxial, and wherein the ophthalmologic microscope further comprises a SLO optical system that scans a light ray which is a visible ray, a near infrared ray, or an infrared ray and guides the light to the subject's eye so as to become substantially coaxial with the optical axis of the OCT optical system.
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